XML 142 R132.htm IDEA: XBRL DOCUMENT
v3.21.1

Fair value of financial instruments - Balances and Levels of Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financial assets: |  |
Available-for-sale debt securities, at fair value | $ 1,172,400 | $ 688,381
Equity securities, at fair value | 4,591 | 3,295
Derivatives | 68,938 | 21,981
Financial liabilities: |  |
Derivatives | 48,242 | 17,933
Mortgage-backed securities - residential |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 773,336 | 477,312
Mortgage-backed securities - commercial |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 21,588 | 13,364
U.S. Treasury securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 16,628 | 7,448
Corporate securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 2,516 | 1,022
Quoted prices in active markets for identical assets (liabilities) (level 1) |  |
Financial assets: |  |
Investment securities | 0 | 0
Loans held for sale | 0 | 0
Mortgage servicing rights | 0 | 0
Derivatives | 0 | 0
Financial liabilities: |  |
Derivatives | 0 | 0
Significant other observable inputs (level 2) |  |
Financial assets: |  |
Investment securities | 1,176,991 | 691,676
Loans held for sale | 683,770 | 262,518
Mortgage servicing rights | 0 | 0
Derivatives | 68,938 | 21,981
Financial liabilities: |  |
Derivatives | 48,242 | 17,933
Significant unobservable inputs (level 3) |  |
Financial assets: |  |
Investment securities | 0 | 0
Loans held for sale | 215,403 | 0
Mortgage servicing rights | 79,997 | 75,521
Derivatives | 0 | 0
Financial liabilities: |  |
Derivatives | 0 | 0
Fair Value, Measurements, Recurring |  |
Financial assets: |  |
Equity securities, at fair value | 4,591 | 3,295
Investment securities | 1,176,991 | 691,676
Loans held for sale | 899,173 | 262,518
Mortgage servicing rights | 79,997 | 75,521
Derivatives | 68,938 | 21,981
Financial liabilities: |  |
Derivatives | 48,242 | 17,933
Fair Value, Measurements, Recurring | U.S. government agency securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 2,003 |
Fair Value, Measurements, Recurring | Mortgage-backed securities - residential |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 773,336 | 477,312
Fair Value, Measurements, Recurring | Mortgage-backed securities - commercial |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 21,588 | 13,364
Fair Value, Measurements, Recurring | Municipals, tax-exempt |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 356,329 | 189,235
Fair Value, Measurements, Recurring | U.S. Treasury securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 16,628 | 7,448
Fair Value, Measurements, Recurring | Corporate securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 2,516 | 1,022
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (liabilities) (level 1) |  |
Financial assets: |  |
Equity securities, at fair value | 0 | 0
Investment securities | 0 | 0
Loans held for sale | 0 | 0
Mortgage servicing rights | 0 | 0
Derivatives | 0 | 0
Financial liabilities: |  |
Derivatives | 0 | 0
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (liabilities) (level 1) | U.S. government agency securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 |
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (liabilities) (level 1) | Mortgage-backed securities - residential |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (liabilities) (level 1) | Mortgage-backed securities - commercial |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (liabilities) (level 1) | Municipals, tax-exempt |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (liabilities) (level 1) | U.S. Treasury securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (liabilities) (level 1) | Corporate securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant other observable inputs (level 2) |  |
Financial assets: |  |
Equity securities, at fair value | 4,591 | 3,295
Investment securities | 1,176,991 | 691,676
Loans held for sale | 683,770 | 262,518
Mortgage servicing rights | 0 | 0
Derivatives | 68,938 | 21,981
Financial liabilities: |  |
Derivatives | 48,242 | 17,933
Fair Value, Measurements, Recurring | Significant other observable inputs (level 2) | U.S. government agency securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 2,003 |
Fair Value, Measurements, Recurring | Significant other observable inputs (level 2) | Mortgage-backed securities - residential |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 773,336 | 477,312
Fair Value, Measurements, Recurring | Significant other observable inputs (level 2) | Mortgage-backed securities - commercial |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 21,588 | 13,364
Fair Value, Measurements, Recurring | Significant other observable inputs (level 2) | Municipals, tax-exempt |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 356,329 | 189,235
Fair Value, Measurements, Recurring | Significant other observable inputs (level 2) | U.S. Treasury securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 16,628 | 7,448
Fair Value, Measurements, Recurring | Significant other observable inputs (level 2) | Corporate securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 2,516 | 1,022
Fair Value, Measurements, Recurring | Significant unobservable inputs (level 3) |  |
Financial assets: |  |
Equity securities, at fair value | 0 | 0
Investment securities | 0 | 0
Loans held for sale | 215,403 | 0
Mortgage servicing rights | 79,997 | 75,521
Derivatives | 0 | 0
Financial liabilities: |  |
Derivatives | 0 | 0
Fair Value, Measurements, Recurring | Significant unobservable inputs (level 3) | U.S. government agency securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 |
Fair Value, Measurements, Recurring | Significant unobservable inputs (level 3) | Mortgage-backed securities - residential |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant unobservable inputs (level 3) | Mortgage-backed securities - commercial |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant unobservable inputs (level 3) | Municipals, tax-exempt |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant unobservable inputs (level 3) | U.S. Treasury securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant unobservable inputs (level 3) | Corporate securities |  |
Financial assets: |  |
Available-for-sale debt securities, at fair value | $ 0 | $ 0

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
Name: | us-gaap_DerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 + Details
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
Name: | us-gaap_EquitySecuritiesFvNi
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
Name: | us-gaap_ServicingAssetAtFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_TradingSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=fbk_MunicipalsTaxExemptMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |